The shooting happened Sunday around 7:15 p.m.
The fourth annual Zoeller Pump Company Derby Festival Touring Parade kicked off the festival's month-long celebration.
Many family members were in attendance on Thursday for the court dedication.
Vincent Crutcher was shot outside his home on Breckenridge Lane on June 23 and later died at the hospital, according to the Louisville Metro Police Department.
According to a Louisville Metro Police Golden Alert, Timothy Tull did not return home to the 100 block of S. 41st Street from PRP High School.
Authorities say 18-year-old Deshawn Girton had been involved in a "big fight" earlier in the day.
The school's various programs help students see how the skills they learn in the classroom apply to the real-world job market.
Friday was signing day at PRP High School -- not for athletes, but for welding students.
Officials discovered the gun after a student told a staff member about it.
Officials have not said if the gun was loaded.